Choose the best option

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7. Here, _ our bus. Hurry up! We _ it.
A. come - missed
B. come - miss
C. come - are going to miss
D. will come - will miss

8. The river _ by poisonous chemicals for a long time.
A. has been polluted
B. polluted
C. was polluted
D. is being polluted

9. My mother _ the responsibility for running the household.